hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: SPEC:Pseudacorus-An appreciation

Bill Shear wrote:
"What's the evidence for pseudacorus being aggressive and crowding out
 native plants?"

This is an interesting question.  It is listed as an invasive species in
a number of states and provinces in North America.  I attend a lot of
meetings on invasives (5 in Washington last week) and always use
pseudocorus as an example.  I have been told by someone at the MASS
meeting that it is definitely invasive in water polluted with
agricultural fertilizers in the Chicago area.  There is also an account
of it being invasive in a small nature reserve in SE British Columbia. 
Other than that, I can not find anyone who can document reasons why it
is included on the invasive lists.

Another question on the same species.  Most of the pseudocorus that I
have seen have the flowers located about half to 2/3rds of the way up
the leaves.  In the "Realm of the Russian Bear" book, page 49, there is
a beautiful picture of beds of this species in the Volga delta.  All the
flowers are raised above the vegetation.  Any explanation?


Ottawa - where the snow still covers the ground although there is a
small patch of ground showing and one or two iris plants have appeared.

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index